Hello: I don't understand why my stats have changed so much?

Yesterday, my stats were 28%.  Today, I started with 0%. (Don't know why?)  Then I won a game this morning and my stats are now 100%? 

Math isn't one of my strong points but it looks like my stats were wiped out overnight?

My question is, is this common?

Thanks for your  time.

tom is working on a semi-major overhaul of how ranks are determined.  There are a number of bugs that need to be taken care of.  He's probably aware of the big ones.  I'd give him a few more days to work on them and then maybe point out some problems that got overlooked.

hm my scores @ Go-Geared got wiped out :-P
same @ Quantum Entanglement

we should give him some time to look it over :-)

Thank you.  I am still fairly new here so I'm just trying to learn how everything works.  No complaints!  Thank you again.